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528I Autobox Help

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Hi, I have a 1996 e39 528I auto steptronic.   last year the gearbox light came on the dashboard and the car has been off the road ever since.

 

I have the carsoft 6.5 so plugged it in and it gave me an eds -2 error.  I can reset the light but as soon as I touch the brake pedal the light comes on again.

 

I got hold of a secondhand gearbox from another car and replaced all of the solenoids in the box (tested them before putting them in and they all click with the correct voltage across them).

this has made no difference at all, exactly the same as before.

 

I have changed the gearbox ecu for another from a known working car and again, no difference at all.

does anyone have any ideas for me to try, I'm willing to try anything at the moment but don't really want to take it to a garage as the cost will far outweigh what its worth.

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Oh dear, I would have replaced your S/H gearbox en-bloc with a new converter oil seal, rather than mess about with solenoids, what were the symptoms prior to your gearbox expiring, flaring between changes etc.

 

Not for nothing are automatic transmissions referred to as black magic, they have the ability to write-off a 10 year old car, any 10 year old car in repair cost, in many cases they are more complex than the engine they are bolted onto. If you are wanting to keep the car then try slotting a second hand gearbox in, and take it from there.

 

Owners on the forum have paid 2K+ for a transmission overhaul, or spend £1500 on a very tidy 530, as somone did getting a car off Benny and put the £500 towards a nice holiday. 

 

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changing the solenoids wasn't too bad a job to be honest.

 

Before the light cam on there were no symptoms at all, car as changing gear perfect, really smooth with no jerkiness.  this is what leads me to think there is an electronic problem here rather than a failure of the box

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Where there any error codes stored in the g/box ecu? Also worth checking stupid things like the brake light switch on the pedal

Sent from my iPhone using Tapatalk

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brake light switch is next to be honest. i'm just a little confused though as I see plenty of 2-pin variants and some 4-pin ones too. but mine has 3 pins (although the plug has space for 4) I checked the connector and only 3 wires going to it too

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Anything from faulty solenoids (as in my E39) to a faulty camshaft Ensor can trigger the orange cog of death.

 

It really needed taking to a transmission specialist for pucker diagnostics as.

 

On 28 January 2017 at 9:09 PM, vanhool said:

Not for nothing are automatic transmissions referred to as black magic,

 

Because vanhool is dead right.

 

On 28 January 2017 at 9:09 PM, vanhool said:

they have the ability to write-off a 10 year old car, any 10 year old car in repair cost,

 

which is exactly why I have an F10 after my E60 threw its Eclutch. Price of recon box = trade in value of E60.

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sorry to drag this topic back up again but i'm still here with the same car still stuck going nowhere.

 

I have changed the gearbox solenoids, I have changed the gearbox, I have changed the ecu  (3 times), I have changed the brake pedal switch. I ahev checked the wiring between the gearbox and the ecu. and no joy.  

 

I can read the code ( eds-2 , check the wiring between pin 2 and eds-2 or check the shift lock solenoid).  I have no shift lock solenoid as mine is a mid 96 car, I have also no wiring to pin 2 on the ecu.

 

I can clear the code and the light goes out but as soon as I turn the ignition back on again the light is back on, I don't need to start the car.

 

i'm determined to fix this if it kills me, I like this car but have since bought a newer bmw (e93).

 

any other ideas guys, cause i'm running out

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No it wasn't, but I'm convinced that this is electrical and not mechanical as the light returns as soon as the ignition is turned on before the car is even started 

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EDS is the pressure regulator. Did you change that or just the solenoids?

 

PS. Which box have you got? Realoem suggests you have the 5HP18. Is that right?

Edited by whiskychaser

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The 5HP18 only has 1 EDS so if you have it, the fault code may be misleading.  The solenoids are pretty reliable so the chances of having two duff ones is a bit slim. You have changed the TCM too so there isn't a lot left to check. I'd be thinking there is a fault in the wiring between the TCM and the EDS. BTW Did you ever replace the brake light switch?

 

PS. Auto boxes are not as complicated as Swiss watches. They don't work by magic either :)

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On 30/08/2017 at 5:43 PM, whiskychaser said:

PS. Auto boxes are not as complicated as Swiss watches. They don't work by magic either :)

 

My swiss watch is far more reliable than my autoboxes in my BMWs, and it cost me less (albeit in 2003) than what the proposed repair would have cost to fix the 'box in my E60!

 

 

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